the chain is complete. But
here he comes, if I am not mistaken, to speak for himself."

A moment later the tall and portly form of Mycroft Holmes was ushered
into the room. Heavily built and massive, there was a suggestion of
uncouth physical inertia in the figure, but above this unwieldy frame
there was perched a head so masterful in its brow, so alert in its
steel-gray, deep-set eyes, so firm in its lips, and so subtle in its
play of expression, that after the first glance one forgot the gross
body and remembered only the dominant mind.

At his heels came our old friend Lestrade, of Scotland Yard--thin and
austere. The gravity of both their faces foretold some weighty quest.
The detective shook hands without a word. Mycroft Holmes struggled out
of his overcoat and subsided into an armchair.

"A most annoying business, Sherlock," said he. "I extremely dislike
altering my habits, but the powers that be would take no denial. In
the present state of Siam it is most awkward that I should be away from
the office. But it is a real crisis. I have never seen the Prime
Minister so upset. As to the Admiralty--it is buzzing like an
overturned bee-hive. Have you read up the case?"

"We have just done so. What were the technical papers?"

"Ah, there's the point! Fortunately, it has not come out. The press
would be furious if it did. The papers which this wretched youth had
in his pocket were the plans of the Bruce-Partington submarine."

Mycroft Holmes spoke with a solemnity which showed his sense of the
importance of the subject. His brother and I sat expectant.

"Surely you have heard of it? I thought everyone had heard of it."

"Only as a name."

"Its importance can hardly be exaggerated. It has been the most
jealously guarded of all government secrets. You may take it from me
that naval warfare becomes impossible withing the radius of a
Bruce-Partington's operation. Two years ago a very large sum was
smuggled through the Estimates and was expended in acquiring a monopoly
of the invention. Every effort has been made to keep the secret. The
plans, which are exceedingly intricate, comprising some thirty separate
patents, each essential to the working of the whole, are kept in an
elaborate safe in a confidential office adjoining the arsenal, with
burglar-proof doors and windows. Under no conceivable circumstances
were the plans to be taken from the office. If the chief constructor
of the Navy desire